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19On the evening of that day, the first day of the week, the doors being shut where the disciples were, for fear of the Jews, Jesus came and stood among them and said to them, "Peace be with you." 20When he had said this, he showed them his hands and his side. Then the disciples were glad when they saw the Lord. 21Jesus said to them again, "Peace be with you. As the Father has sent me, even so I send you." 22And when he had said this, he breathed on them, and said to them, "Receive the Holy Spirit. 23If you forgive the sins of any, they are forgiven; if you retain the sins of any, they are retained."
24Now Thomas, one of the twelve, called the Twin, was not with them when Jesus came. 25So the other disciples told him, "We have seen the Lord." But he said to them, "Unless I see in his hands the print of the nails, and place my finger in the mark of the nails, and place my hand in his side, I will not believe."
John 20:19-25 (RSV)